Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenue:
Rents	$ 115,552	$ 109,699
Tenant reimbursements	20,357	18,696
Termination fees	496	1,490
Third party management fees, labor reimbursement and leasing	3,236	3,142
Other	967	1,512
Total revenue	140,608	134,539
Expenses:
Property operating expenses	39,641	38,077
Real estate taxes	14,430	13,567
Third party management expenses	1,425	1,250
Depreciation and amortization	49,861	48,096
General and administrative expenses	6,551	6,050
Total operating expenses	111,908	107,040
Operating Income (Loss)	28,700	27,499
Other Income (Expense):
Interest income	58	483
Interest expense	(30,914)	(34,144)
Interest expense — amortization of deferred financing costs	(1,161)	(1,311)
Interest expense — financing obligation	(218)	(182)
Equity in income of real estate ventures	1,535	44
Loss on early extinguishment of debt	(3)	(248)
Loss from continuing operations	(2,003)	(7,859)
Discontinued operations:
Income from discontinued operations	618	2,527
Net gain on disposition of discontinued operations	5,304	14,668
Total discontinued operations	5,922	17,195
Net income	3,919	9,336
Net (income) loss from discontinued operations attributable to non-controlling interests — LP units	(75)	(315)
Net (income) loss attributable to non-controlling interests — LP units	47	181
Net (income) loss attributable to non-controlling interests	(28)	(134)
Net Income (Loss)	3,891	9,202
Distribution to Preferred Shares	(1,725)	(1,998)
Amount allocated to unvested restricted shareholders	(108)	(96)
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust	2,058	7,108
Basic income (loss) per Common Share:
Continuing operations	$ (0.03)	$ (0.07)
Discontinued operations	$ 0.04	$ 0.12
Earnings Per Share, Basic	$ 0.01	$ 0.05
Diluted income (loss) per Common Share:
Continuing operations	$ (0.03)	$ (0.07)
Discontinued operations	$ 0.04	$ 0.12
Earnings Per Share, Diluted	$ 0.01	$ 0.05
Weighted Average Number of Shares Outstanding, Basic	143,605,659	142,820,955
Weighted Average Number of Shares Outstanding, Diluted	143,605,659	142,820,955
Net income (loss) attributable to Brandywine Realty Trust
Loss from continuing operations	(1,956)	(7,678)
Income from discontinued operations	5,847	16,880
Net Income (Loss)	3,891	9,202
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue:
Rents	115,552	109,699
Tenant reimbursements	20,357	18,696
Termination fees	496	1,490
Third party management fees, labor reimbursement and leasing	3,236	3,142
Other	967	1,512
Total revenue	140,608	134,539
Expenses:
Property operating expenses	39,641	38,077
Real estate taxes	14,430	13,567
Third party management expenses	1,425	1,250
Depreciation and amortization	49,861	48,096
General and administrative expenses	6,551	6,050
Total operating expenses	111,908	107,040
Operating Income (Loss)	28,700	27,499
Other Income (Expense):
Interest income	58	483
Interest expense	(30,914)	(34,144)
Interest expense — amortization of deferred financing costs	(1,161)	(1,311)
Interest expense — financing obligation	(218)	(182)
Equity in income of real estate ventures	1,535	44
Loss on early extinguishment of debt	(3)	(248)
Loss from continuing operations	(2,003)	(7,859)
Discontinued operations:
Income from discontinued operations	618	2,527
Net gain on disposition of discontinued operations	5,304	14,668
Total discontinued operations	5,922	17,195
Net income	3,919	9,336
Net Income (Loss)	3,919	9,336
Distribution to Preferred Shares	(1,725)	(1,998)
Amount allocated to unvested restricted shareholders	(108)	(96)
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust	2,086	7,242
Basic income (loss) per Common Share:
Continuing operations	$ (0.03)	$ (0.07)
Discontinued operations	$ 0.04	$ 0.12
Earnings Per Share, Basic	$ 0.01	$ 0.05
Diluted income (loss) per Common Share:
Continuing operations	$ (0.03)	$ (0.07)
Discontinued operations	$ 0.04	$ 0.12
Earnings Per Share, Diluted	$ 0.01	$ 0.05
Weighted Average Number of Shares Outstanding, Basic	145,451,396	145,485,422
Weighted Average Number of Shares Outstanding, Diluted	145,451,396	145,485,422
Net income (loss) attributable to Brandywine Realty Trust
Loss from continuing operations	(2,003)	(7,859)
Income from discontinued operations	5,922	17,195
Net Income (Loss)	$ 3,919	$ 9,336